You can't go wrong with Jim McShane. BTW, in my CJ PV-15 pre-amp I'm using the Genalex 12 AX7's and 12AU7's, but Jim says I was lucky that they are running so quietly. He says he would not recommend the gold lions for pre-amp phono stages, but that if they sounded quiet then I should leave them in. They do. I did.
Jim sold me 2 quads of EH 6CA7's for my JWN tube amp. He says they are a close second to the gold Lion KT-77's. They sound quite good and I have had no problems with them. Of course, with Jim Nicholl's circuitry, the tubes in his amps generally last a long time anyway.
